Added a guide to using the Cupcake CNC.
Make the top menu bar collapsible. Add HSG SG Crest to the top left corner. Consistent in all sub pages.
Enable collapsible navbar in mobile responsive mode.
Merge pull request #55 from rolandturner/master

Added a guide to using the Cupcake CNC. Thanks Roland
Merge pull request #56 from miccheng/responsive-fix

Fixes to the responsive view of the website